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(No Model.) 2 Sheets-Sheet 1.

0. S. ELLITHORP 8: J. F. STEWARD.v

GRAIN BINDER.

No. 536,422. Patented Mar. 26, 1895.

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/w@ fm (No Model.) 2 Sheets-Sheet 2.

O. S. ELLITHORP & J. F. STEWARD- GRAIN BINDER.

No. 536,422. Patented Mar. 26, '1895.

NITED STATES PATENT OFFICE.

ORREN S. ELLITHORP AND JOHN F. STEWARD, OF CHICAGO, ILLINOIS, ASSIGN- ORS TO THE WILLIAM DEERING & COMPANY, OF SAME PLACE.

GRAIN-BINDER.

SPECIFICATION forming part of Letters Patent No. 536,422, dated March 26, 1895. Application filed April l5 1892. Serial No. 429,291. (No model.)

To all whom it may concern.-

Be it known that we, ORREN S. ELLITHORP and J OHN F. STEWARD, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Grain-Binders, of which the following is a full description, reference being had to the accompanying drawings, in which-- .Figure l isa perspective view of such parts of our improvement as are necessary to show its operations. Fig. 2 is a side elevation of all the parts shown in Fig. 1. Fig. 3 is a side elevation designed to show the details of construction of the tripping arm. Fig.4 is a detail of the tripping spring and certain parts with which it is'connected, in section. Fig. 5 isa detail of the compressor shaft and bearing.

First, turning to Fig. 1, in which the binder frame is omitted for the sake of clearness, the various parts will be pointed out.

Our binder is of the well known Appleby type, having the needle shaftA,knotter shaft B, and packer shaft 0. These shafts must be considered as journaled in the usual framework. Upon the packer shaft is the pinion c, loosely mounted thereon, and the clutching device 0, which are shown in detail in Fig. 3 and need no description, as they will be understood at a glance, the form being that almost universally used. Suffice it to say that the pawl c is arrestedby a detent and released by a movement of the latter away therefrom. On the shaft Bis a gear I). This is rotated by means of a pinion and an'intermediate shaft, not shown, having a pinion geared into the pinion 0, upon which isthe spring pawl 0. Upon the shaft B is acompressor controlling cam-rim b, cut away at a certain portion to permit the compressor controlled thereby to drop.

D is a shaft having extended therefrom, in the bundle-delivery direction, the arm d, which serves as a tripping compressor arm.- The shaft D is supported near its two ends; at its rear end by the arm (Z and at its forward end as will be explained. On it is formed a crank (i In order that the shaft may not be rocked so far upward as to throw the compressor out of position when being erected sharply after the completed bundle is i ejected, the stop d is applied to the bearing (1 against which the crank d strikes.

d is an elastic yielding link, formed of various parts, all of which it is not necessary to describe, as it is one of the well known kind of compressor links. Suffice it to say, that it is elastically extensible,and is limited in the matter of shortening by a collar (Z on the spring rod.

E is a bell crank, having a pivot suitably supported in any convenient part of the main frame. One end of this terminates in an anti-friction roller e. Into an eye 6 at the other end is booked the oompressorlink. The compressor shaft being free to rock and the 6.5 tripping compressor arm d secured thereto, the latter may be lowered -to permit passage therebeyond-of the completed bundle, and be raised to be in a position such that the grain may be newly compacted thereagainst.

Upon the packer shaft are the cranks F, and carried thereupon are the packers G, controlled in their movements by links gand g, the latter pivoted to the support H, which in turn is secured to a flange forward of the bar I, that forms one part of the main frame. (See Fig. 2.)

The cam-rim b is not concentric, but camshaped, so that as the gear rotates in the direction shown by the arrow in Fig. 2, the compressor will be forced against the bundle be ing bound, or at least bring stress upon the compressor spring.

J may be considered the upper surface of the binding table, and K the under surface of the breast-plate, the parts that are supported from the upper portion of the main frame with the knotter being located therebehind.

, L is the needle, of well known form,secured to the needle shaft said shaft having the crank Z, to which and to a wrist on the wheel I? is connected the pitman Z.

So far as described the parts have no patentable difference over devices found in the 5 older art. Ourinvention consists in arrangements, and combinations, and details of construction of the tripping devices, which will nowbe explained.

Suitably supported in the main frame is too the rock-shaft M, having an arm m connected thereto, extending deliveryward and reaching somewhat into the space into which the grain is compacted by the packers G-G. This arm is forced to yield by the infed grain and by properly connecting mechanism to trip the clutch. As in ordinary hinders the packer shaft makes a number of revolutions while the binding devices proper are performing their operations, it is necessary to hold the tripping finger in the position to which it has yielded until the binding devices have returned to their home position. Ordinarily the bundle of grain does this, but in threading up a machine no gavel will be in the receptacle and hence we so provide that 'the needle, alongside of which is the trip arm, shall hold it down. Upon the side -of the needle is placed a pin Z shown in dotted lines in all the figures. The end of the trip m nearest its hub, Where secured to M, isso shaped that the pin l may ride alongit and force it down for the purpose'of keepingthe detent away from the clutch until the needle has returned again.

To the rear of the shaft M is secured the detent N, which is an arm adapted, when the binder is at rest, to reach so near the clutching device that it engages with the pawl c"'of the clutch. In Fig. 3 it isshown as moved away from the pawlc", and the latter has been thrown by its spring so that its part c is in the path of and will be engaged by the clutch driver a. In Fig. 2, however, the detent is shown in its position for arrestingthe pawl and disengaging the clutching devices. In order that the detent may not fall too low, a projection 01 is extended from its hub in such direction as to come in contact with the journal bearing of the needle shaft. The spring 91, is carried by the detent, preferably inclosed in a sleeve 71* which is made in one piecewith the said detent. Downward through this sleeve is extended an L-shaped spring rod 01 and preferably also passing through the spring, thelatter resting uponthe bottom of the sleeve. Upon the upperend of the spring rod is the adjustment nut n). The hook portion of the spring rod extends beneath the needle crank.

The parts last described will be readily understood by referring to Fig. 4.

When the needle is'bronght upward in the operation of binding, the crank is lifted away from the spring rod and-hence there is no stress on the spring to force the detent downward, because, as seen in Fig. 4, it isthe needle crank that, by resting upon the spring rod, causes the spring to force the detent downward.

It is plainthat when the pressure is brought upon the trip arm m by the accumulating gavel the resistance of thedetent spring will be overcome and the clutching devices be free to engage. This done, the needle crank will be drawn upward and, moving away'fromthe hook, the detentwillno longer be held downward. In threading up, which necessitates tripping the clutch and revolving the binder by hand, the pin in the needle, as before stated, will move along the curved portion of the arm near its hub and hold the detent up. An upward projection will be seen to extend from-the support H. Guided in its slot 71, at its lower end andpivoted to the tripping arm m near its hub, is a link h, having a notch in which the compressor shaft D is jonrnaled. Thisnotch may be an eye, but we make it an arch so that the parts may go together easily. Extending so as to underlie the compressor shaft, is the rest h Reference to Figs. 2 and 3 will show that the compressor shaft is confined by the support It and notch in the link It. We shall treat the compressor shaft as sustained in its proper position, but freeto move from the packers toa limited extent.

The link h'will be treated merely as means for connecting the compressor shaft to the trippingarm m, or rather we shall treat the part of the tripping arm reaching from its hub to w'herethe link is connected,and the link,-as one means for rocking the trip shaft M. The object of this connection is to control the position of the compressing arm relative to the packing devices by means that shall 'assist in tripping the clutch. Theoperation of this feature will be readily seen when we consider the compressor shaft so supported that it may move from the packers and so connectedthat itmayrock the shaft andtrip the clutch. \Ve shall draw our claims to cover both this latter feature, tripping by means of the arm m, and also tripping by means of thebodily yielding compressor shaft and the arm m when'connected.

Our primary object is to accomplish tripping by means of the arm 1%, but to supplement the latter by a device thatshall render it operative in conditions of grain that might be in'the leastineffective in creating sufficient pressure against it. Inshort, grain binders sometimes choke, even though the trip spring be made very sensitive, and should our tripping device m fail, the pressure of the grain will eventua'llybecome so great upon the com pressing arm d as to force it bodily away from the packers, and through thelinking device rocking the trip shaft.

We trnstwehavemade it clear that we do not trip by causing arocking movement of the compressor shaft D, but by permitting it to move sidewise and, so connecting it to the detent that said sidewise movement may cause the tripping of the clutch.

By referenceto Fig. 2 it will be seen that if the-line of the center of the pitman were extended beyond the shaft B it would pass some distance belowthe center of said shaft. It has been explained that the trip springis drawn down by theneedle shaft crank.

said crank may be considered as sustained by thetripspringand its rod. The spring, however, cannot lift the needle crank because The the latter cannot move on account of being thrust home by the pitman. When, however, the trip stop or detent N has been moved away from the pawl of the clutch, the parts of the binder that were at rest are free to move forward, and the thrust of the pitman due to the lifting action of the spring when it is made tense by the upward movement of the detent N will have the effect of lifting the crank and thus starting the binder forward because the pitman, being off the center of the crank formed by the wheel on the shaft B, will by its thrusting action force the crank to move. cause when the partsare in labor the pawl of the clutching devices is started suddenly'forward and when the driving part c of the clutch strikes it, it is moving away, for the instant, so rapidly that the shock is not great.

VVhatwe claim as our invention, and desire to secure by Letters Patent, is-

1. In a grain binder, packing devices and clutching devices, in combination with a compressor shaft adapted to hold its compressor arm in position to receive the packed grain, and to move the latter away by a rocking action of the shaft to permit the passage of the completed bundle, said compressor shaft sustained in a yielding bearing near the compressor end that permits it to swing, and so connected to the clutching devices as to set them free when the said compressor shaft is swung by the pressure of the accumulating grain brought in by the packers, substantially as described.

2. In a grain binder, packing devices and clutching devices, in combination with a compressor shaft adapted to hold its compressor arm in position to receive the packed grain and to move it away by a rocking action of the shaft to permit the passage of the completed bundle, said compressor shaft sustained in a yielding bearing near the compressor end that permits it to swing, and so connected to the clutching devices as to set the latter free when the said compressor shaft is swung under the pressure of the accumulating grain brought in by the packers, substantially as described. V

This is an important matter be-' 3; In a grain binder, a tripping compressor arm mounted upon a shaft in bearings that permit it to rock and permit it to swing away from the packers, said yielding bearings connected to clutching devices, all in combina-' tion with packing devices that do not yield and band-placing and baud-uniting devices, substantially as described.

4. In a grain hinder, the clutching devices and a detent mounted upon a rock-shaft that may cause it to swing away from the clutching devices, a tripping compressor shaft mounted in bearings, one of which bearings permits the said shaft to swing away from the .packing devices, and so connected to the de-.

tent supporting rock-shaft that the swinging movement of the compressor shaft produces a rocking movement of the detent supporting shaft, all in combination with unyielding packing devices, substantially as described. 5. In combination with the binding, packing and clutching devices of a grain binder,

a tripping arm m, a tripping compressor arm d mounted upon a rock shaft, supported in a bearing that will permit the compressor and its shaft 'to yield under the action of the accumulating gavel, said compressor shaft bearing so connected to the clutch detent that by itsswinging movement said detent will permit engagement of the clutching devices, substantially as described.

, 6. In a grain binder, the swinging compressor shaft, having a compressor arm mounted thereon, a rocking trip shaft M, having the tripping arm m mounted thereon, said swinging compressor shaft supported in bearings linked to the said trip arm m, all-com bined with clutching devices whereby both the yielding movement of the compressor shaft in its bearings and the rocking move ment of the tripping arm m shall produce a rocking action of the trip shaft M, and set free the clutching devices, substantially as ELISE M. HALvERsoN. 

